CVE-2021-41274

solidus_auth_devise provides authentication services for the Solidus webstore framework, using the Devise gem. In affected versions solidus_auth_devise is subject to a CSRF vulnerability that allows user account takeover. All applications using any version of the frontend component of solidus_auth_devise are affected if protect_from_forgery method is both: Executed whether as: A before_action callback (the default) or A prepend_before_action (option prepend: true given) before the :load_object hook in Spree::UserController (most likely order to find). Configured to use :null_session or :reset_session strategies (:null_session is the default in case the no strategy is given, but rails --new generated skeleton use :exception). Users should promptly update to solidus_auth_devise version 2.5.4. Users unable to update should if possible, change their strategy to :exception. Please see the linked GHSA for more workaround details.

Weakness

The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Affected Software

Potential Mitigations

• Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
• For example, use anti-CSRF packages such as the OWASP CSRFGuard. [REF-330]
• Another example is the ESAPI Session Management control, which includes a component for CSRF. [REF-45]
• Use the “double-submitted cookie” method as described by Felten and Zeller:
• When a user visits a site, the site should generate a pseudorandom value and set it as a cookie on the user’s machine. The site should require every form submission to include this value as a form value and also as a cookie value. When a POST request is sent to the site, the request should only be considered valid if the form value and the cookie value are the same.
• Because of the same-origin policy, an attacker cannot read or modify the value stored in the cookie. To successfully submit a form on behalf of the user, the attacker would have to correctly guess the pseudorandom value. If the pseudorandom value is cryptographically strong, this will be prohibitively difficult.
• This technique requires Javascript, so it may not work for browsers that have Javascript disabled. [REF-331]

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/111.html
• https://cwe.mitre.org/data/definitions/462.html
• https://cwe.mitre.org/data/definitions/467.html
• https://cwe.mitre.org/data/definitions/62.html

References

• https://github.com/solidusio/solidus_auth_devise/commit/731a6645e90ea9fd228f78ec53c6976c048a0555
• https://github.com/solidusio/solidus_auth_devise/security/advisories/GHSA-xm34-v85h-9pg2